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Yes, that is, pay attention not to damage the waterproof layer during construction, and then close the water test once after the completion of the construction, just in case.
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Now the decoration is generally done like this.
First, they have to be on site, and workers will not waste tiles too much. It is suggested that some imperfect tiles can be pasted by workers in some invisible positions in the future, such as behind cabinets, washbasins, mirrors, etc., and pay attention to the tiles, waist tiles, etc. >>>More
Your idea is similar to the concept of tunnel drainage, but the household bathroom feels that there is little need to do so, the bathroom itself has a slope on the ground, and the water will flow along the slope, as for the water in the waterproof layer you said will vaporize away, the problem is not big, (personal opinion, for reference) thank you.
The waterproof is almost dry and then pasted, and the bricks cannot be veneered immediately.
If you are only using it normally and have not made any changes to your home, it is recommended that you contact your landlord. The landlord is the property owner.
It can reduce a certain amount of noise, and filling the gap between the brick and the sewer pipe with styrofoam can indeed reduce some of the noise, but it will have a certain effect.